The invention provides a seat backrest angle adjusting lock, which comprises a sleeve, a rotating lock frame, an inserting piece, an extension spring, a locking shaft and a compression spring. The total length of a locking device is adjusted to enable the triangular shape to change, and therefore a backrest assembly is driven to rotate around a rotating shaft to achieve the backrest angle adjusting function. The locking shaft and the rotating lock frame convert rotary motion into linear motion by adopting the principle of a ball screw. The steel cable assembly is unlocked by stretching the handle, the inserting piece rotates, the clamping groove of the inserting piece is pulled out of the rotating lock frame, the compression spring is stretched, the locking pin moves in the rotating lock frame to extend, the locking pin drives the backrest assembly to rotate around the rotating shaft, and the angle of the backrest is reduced. And the handle is loosened, and the inserting piece is resetand locked. When the backrest angle is increased, a passenger needs to lean against the backrest to provide a power source, the unlocking device and the compression spring are compressed, the lockingpin is shortened, and the backrest angle is increased. The seat backrest angle adjusting lock has the advantages of high reliability, small size, light weight and quickness in operation.

    本发明提供了一种座椅靠背角度调节锁,包括套筒、旋转锁框、插片、拉伸弹簧、锁定轴、和压缩弹簧,通过调节锁定装置的总长度使得三角形形状发生变化,从而驱动靠背组件绕转轴转动实现靠背角度调节的功能。锁定轴和旋转锁框采用滚珠丝杆的原理,将回转运动转化为直线运动。通过手柄拉伸解锁钢索组件,插片旋转,插片的卡槽从旋转锁框中拉出,压缩弹簧舒张,锁定销在旋转锁框内运动以致伸长,锁定销带动靠背组件绕转轴旋转,靠背角度减小;松开手柄,插片复位锁定。靠背角度增大需乘员倚靠靠背提供动力源,解锁装置,压缩弹簧被压缩,锁定销长度缩短,靠背角度增大。本发明具有可靠性高、小巧轻便、操作快捷的优点。


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    Title :

    Seat backrest angle adjusting lock


    Additional title:

    一种座椅靠背角度调节锁


    Contributors:
    WU ZHAOJIANG (author) / HUANG CHUNLI (author) / CUI WENMING (author) / MENG FANHUI (author)

    Publication date :

    2020-11-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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